centos7安装mysql5.7

1. 首先下载mysql-community对应的centos7（既rhel7）RPM包，

地址为: https://dev.mysql.com/downloads/repo/yum/

2.然后是会用yum安装上述rpm包

sudo yum install -y mysql57-community-release-el7-11.noarch.rpm

3.使用yum安装mysql-community-server

sudo yum install -y mysql-community-server

4. 启动mysql-server服务

sudo systemctl start mysqld

5.第一次启动时会在/var/log/mysql.log生成一个随机的root密码，使用该密码登录mysql并设置root密码

grep "password" /var/log/mysql.log
mysql -u root -p

#进入mysql，设置root密码
mysql> set password='[e-mail]';

6.修改mysql默认的字符编码为utf8，编辑/etc/my.cnf，在 [mysqld] 标签下添加如下内容:

datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
init_connect='SET collation_connection = utf8_unicode_ci'
init_connect='SET NAMES utf8'
character-set-server=utf8
collation-server=utf8_unicode_ci
skip-character-set-client-handshake

重启mysqld服务

sudo systemctl restart mysqld

使用show variables like "%character%";show variables like "%collation%";命令查看mysql默认字符编码:

mysql -u root -p
show variables like "%character%";show variables like "%collation%";

mysql5.7在centos安装完成。

7. 创建数据库使用如下的命令

create database mydb default character set utf8 collate utf8_bin;
grant all on mydb.* to 'mydb'@'%' identified by '[e-mail]';
flush privileges;